I'm continually getting the error "Error - the password for the associated certificate is incorrect" when trying to build with my iOS production key. I've checked the password, deleted and re-added the key, logged out and in and even created a new certificate from scratch in the Apple Developer console with different password and tried that. None of this has worked. Building with my development certificate works fine though. I'm not really sure what the issue is and there's nothing in the log.

Sort of. I created another new certificate and re-exported with a new password that didn't have any ! marks in it. Then when I added it to Build I didn't use any hyphens in the name I gave it. I don't think any of these things should have mattered since I have an existing key that uses ! marks in the password and other keys with hyphens in the name. Whether any of these items was the cause I don't know but I was able to build with the distribution key after this.